it had a stack, but that stack was on the heap. In lua 5.4 under normal circumstances, 20 frames of Lua call stack corresponds to 20ish frames of C call stack.

it had a stack, but that stack was on the heap. In lua 5.4 under normal circumstances, 20 frames of Lua call stack corresponds to 20ish frames of C call stack. In lua 5.3 the number of C stack frames was some smaller number unrelated to the depth of the Lua call stack.